Polk Audio F/XiA4 Timbre-Matched Bipole/Dipole Surround Loudspeakers - Pair (Black)

Model: FXIA4BLK UPC: 747192118518 Item: 156262


Regular Price: $399.00

Save: $160.00 (40%)

Savings include $160 instant rebate. Offer ends 12/31/2018.
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754 Route 309 (Bethlehem Pike) Montgomeryville, PA 18936
  • Mon: 9:30am - 8pm
  • Tues - Fri: 9:30am - 6pm
  • Sat: 9:30am - 5pm
  • Sun: 12pm - 5pm
(215) 368-8343
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38 Greenfield Avenue, Ardmore, PA 19003
  • Mon - Fri: 10am - 6pm
  • Sat: 10am - 5pm
  • Sun: Closed
(610) 649-7002
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Product Information

Full Fidelity and High Performance

The F/XiA4's engine is the dual Dynamic Balance 1" dome tweeter design and a 5 1/4" Dynamic Balance driver that produces believable real-life effects at prodigious volumes. The selectable bipole/dipole function allows you to configure it to your space and 7.1 systems, and the smaller cabinet enables it to fit in more places.


  • The trapezoidal shaped cabinets aim the drivers and tweeters in opposing directions to produce a more realistically diffused wavefront and wide, lifelike imaging of surround sound.
  • With the flip of a switch, Polk's dipole/bipole circuitry changes the sound-field from direct to indirect radiation patterns enabling you to place the surround speaker beside or behind you, depending on your listening room setup.
  • Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes.
  • Polk's proprietary, patented Dynamic Balance technology allows their engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.
  • Durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for a life-time of reliable sound.
  • The F/XiA Cascade Tapered Crossover eliminates the comb filtering and beaming, common to multi-driver speakers, which degrades the quality of the audio and collapses the sound-stage.
  • Patented Acoustic Resonance Control (ARC) technology suppresses cabinet resonance that causes distortion to ensure clear and natural sound.
  • Computer-modeled anti-diffraction grilles enhance the good looks while minimizing sonic interference.
  • All Polk loudspeakers are timbre-matched within their series, designed with the same components throughout, to achieve seamless speaker-to-speaker blending effects in multi-channel systems.
  • Gold-plated, professional-style 5-way binding posts offer the most secure connection options.



  • Dimensions (W x H x D): 11.375" x 12" x 7.437"
  • Weight: 9 lbs.
  • Driver complement: (1) 5.25" diameter mid/woofer, (2) 1" diameter tweeter
  • Total frequency response: 50Hz - 27kHz
  • Lower and upper -3dB limits: 60Hz - 26kHz
  • Recommended amplifier power per channel: 20 watts - 150 watts


What's in the Box

What's in the Box:

  • F/XiA4 Timbre-Matched Bipole/Dipole Surround Loudspeakers - Pair



Customer Reviews for Polk Audio F/XiA4 Timbre-Matched Bipole/Dipole Surround Loudspeakers - Pair (Black)

5.0 / 5.0
1 Review
5 Stars
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1 Star
Excellent product sold by an excellent company.
February 21, 2018
7 months ago


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Why did you choose this?
World Wide Stereo Store
Need a good set of rear speakers to complete my 7.1 setup. Good reviews and the price was a determining factor.
Michael J on Mar 26, 2018
Need a good set of rear speakers to complete my 7.1 setup. Good reviews and the price was a determining factor.
Michael J on Mar 26, 2018